CN201090543Y - Helix labyrinth seal multi-stage pump balancing disc, balancing drum - Google Patents
Helix labyrinth seal multi-stage pump balancing disc, balancing drum Download PDFInfo
- Publication number
- CN201090543Y CN201090543Y CNU2007200736237U CN200720073623U CN201090543Y CN 201090543 Y CN201090543 Y CN 201090543Y CN U2007200736237 U CNU2007200736237 U CN U2007200736237U CN 200720073623 U CN200720073623 U CN 200720073623U CN 201090543 Y CN201090543 Y CN 201090543Y
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- CN
- China
- Prior art keywords
- balancing
- balancing drum
- disc
- balance
- drum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a spiral labyrinth seal multistage pump balancing disc and a balancing drum, comprising a balancing disc, a balancing drum, a balancing sleeve and a pump body opposite to each other. The utility model is characterized in that screw threads which are one-start screw threads or multi-start screw threads are arranged on the rotating contact surfaces of the balancing disc and the balancing drum; reverse screw threads are arranged on the balancing sleeve and the pump body and are one-start screw threads or multi-start screw threads. The utility model has the advantages that the spiral labyrinth seal is adopted for the balancing disc and the balancing drum, the seal length is reduced, the balancing effect is effectively enhanced and the leak quantity is reduced; thereby the efficiency is improved and the structure is optimized.
Description
Technical field
The utility model relates to a kind of multistage pump Balance disc, balancing drum, particularly a kind of spiral labyrinch seal multistage pump Balance disc, balancing drum.
Background technique
In the rotating shaft of multistage pump, need to assemble Balance disc, balancing drum is in the on-stream suffered axial force of balance multistage pump, because Balance disc, balancing drum generally is installed between the zone of high pressure and low pressure area of multistage pump, therefore need seal between balance set on the pump housing and the Balance disc and between the pump housing and the balancing drum, owing to be the sealing between zone of high pressure and the low pressure area, so all seal by little gap, 0.15-0.25mm is generally got in little gap, yet because of closely spaced when undersized, friction appears in relatively rotating easily, when the pressure of zone of high pressure is higher, just require closely spaced seal length lengthening, and the balance leakage rate is excessive, influences the efficient of multistage pump structure and multistage pump.
Summary of the invention
The purpose of this utility model is to solve between Balance disc, balancing drum and the pump housing of multistage pump in the prior art to seal the easy wear problems in existing gap by little gap, and a kind of spiral labyrinch seal multistage pump Balance disc, balancing drum are provided.The utility model design spiral labyrinch seal multistage pump Balance disc, balancing drum comprise Balance disc, balancing drum, and the relative balance set and the pump housing is characterized in that: rotate on the surface of contact at Balance disc, balancing drum screw thread is set.Rotating the screw thread that is provided with on the surface of contact at Balance disc, balancing drum is single screw thread.Rotating the screw thread that is provided with on the surface of contact at Balance disc, balancing drum is multiple thread.The relative balance set and the pump housing are provided with left-hand thread.The left-hand thread that the relative balance set and the pump housing are provided with is a single screw thread.The left-hand thread that the relative balance set and the pump housing are provided with is a multiple thread.The utility model has the advantages that by Balance disc, balancing drum are changed into spiral labyrinch seal, reduced seal length, strengthened counterbalance effect effectively and reduced leakage rate, thereby improved efficient, optimized structure.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model (screw thread is arranged) on Balance disc,
Accompanying drawing 2 is structural representation of the present utility model (on Balance disc and balancing drum screw thread being arranged),
Accompanying drawing 3 is structural representation of the present utility model (on the balancing drum and the pump housing screw thread being arranged),
Accompanying drawing 4 is structural representation of the present utility model (screw thread is arranged) on balancing drum,
Below in conjunction with accompanying drawing and example the utility model is elaborated.
Embodiment
Comprise Balance disc 1, balancing drum 2 among the figure, the relative balance set 3 and the pump housing 4 is characterized in that: rotate on the surface of contact screw thread 5 is set at Balance disc 1, balancing drum 2.Rotate the screw thread 5 that is provided with on the surface of contact at Balance disc 1, balancing drum 2 and be single screw thread.Rotate the screw thread 5 that is provided with on the surface of contact at Balance disc 1, balancing drum 2 and be multiple thread.The relative balance set 3 and the pump housing 4 are provided with left-hand thread 6.The left-hand thread 6 that the relative balance set 3 and the pump housing 4 are provided with is single screw thread.The left-hand thread 6 that the relative balance set 3 and the pump housing 4 are provided with is multiple thread.
In use, owing on sealing contact surface, be provided with spiral labyrinch seal, therefore strengthened sealing effect, and Balance disc 1, balancing drum 2 rotate be provided with on the surface of contact multiple thread 5 and simultaneously the relative balance set 3 and the pump housing 4 be provided with bull left-hand thread 6, can make sealing effect better.
Claims (6)
1. spiral labyrinch seal multistage pump Balance disc, balancing drum comprise Balance disc, balancing drum, and the relative balance set and the pump housing is characterized in that: rotate on the surface of contact at Balance disc, balancing drum screw thread is set.
2. by the described spiral labyrinch seal multistage pump of claim 1 Balance disc, balancing drum, it is characterized in that: rotating the screw thread that is provided with on the surface of contact at Balance disc, balancing drum is single screw thread.
3. by the described spiral labyrinch seal multistage pump of claim 1 Balance disc, balancing drum, it is characterized in that: rotating the screw thread that is provided with on the surface of contact at Balance disc, balancing drum is multiple thread.
4. by the described spiral labyrinch seal multistage pump of claim 1 Balance disc, balancing drum, it is characterized in that: the relative balance set and the pump housing are provided with left-hand thread.
5. by the described spiral labyrinch seal multistage pump of claim 4 Balance disc, balancing drum, it is characterized in that: the left-hand thread that the relative balance set and the pump housing are provided with is a single screw thread.
6. by the described spiral labyrinch seal multistage pump of claim 4 Balance disc, balancing drum, it is characterized in that: the left-hand thread that the relative balance set and the pump housing are provided with is a multiple thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200736237U CN201090543Y (en) | 2007-08-14 | 2007-08-14 | Helix labyrinth seal multi-stage pump balancing disc, balancing drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200736237U CN201090543Y (en) | 2007-08-14 | 2007-08-14 | Helix labyrinth seal multi-stage pump balancing disc, balancing drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090543Y true CN201090543Y (en) | 2008-07-23 |
Family
ID=39862304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200736237U Expired - Fee Related CN201090543Y (en) | 2007-08-14 | 2007-08-14 | Helix labyrinth seal multi-stage pump balancing disc, balancing drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090543Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865138A (en) * | 2010-07-06 | 2010-10-20 | 浙江工业大学 | Novel multistage centrifugal pump |
| CN102588304A (en) * | 2012-02-10 | 2012-07-18 | 宁波大叶园林设备有限公司 | Centrifugal pump with swirl sprayer engine directly connected with high-speed function vane wheel and even-spinning labyrinth |
-
2007
- 2007-08-14 CN CNU2007200736237U patent/CN201090543Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865138A (en) * | 2010-07-06 | 2010-10-20 | 浙江工业大学 | Novel multistage centrifugal pump |
| CN102588304A (en) * | 2012-02-10 | 2012-07-18 | 宁波大叶园林设备有限公司 | Centrifugal pump with swirl sprayer engine directly connected with high-speed function vane wheel and even-spinning labyrinth |
| CN102588304B (en) * | 2012-02-10 | 2014-04-16 | 宁波大叶园林设备有限公司 | Centrifugal pump with swirl sprayer engine directly connected with high-speed function vane wheel and even-spinning labyrinth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20090914 |